Environment-friendly flame-retardant polyolefin protective film, and preparation method thereof

Abstract

The invention provides an environment-friendly flame-retardant polyolefin protective film. The environment-friendly flame-retardant polyolefin protective film comprises, by weight, 100 parts of polyolefin resin, 3 to 12 parts of a composite flame retardant, 1 to 5 parts of a color master batch, and 1 to 2 parts of a processing auxiliary agent; wherein the polyolefin resin is composed of 50 to 100wt% polyethylene resin and 0 to 50wt% of polypropylene resin; the composite flame retardant comprises an eight bromo ether flame retardant and antimony oxide at a weight ratio of 2-4:1. The composite flame retardant also comprises 1 to 5wt% of aluminium hypophosphite and / or aluminum diethylphosphinate. A preparation method comprises following steps: the above ingredients are mixed to be uniform, are subjected to heating melting using an extrusion film blowing machine so as to obtain polyolefin film through film blowing, and then gluing and drying are carried out so as to obtain the protective film. The environment-friendly flame-retardant polyolefin protective film can be used in metal product protection.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to an environment-friendly flame-retardant polyolefin protective film and a preparation method thereof. Background technique [0002] With the improvement of safety awareness, everyone has higher and higher requirements for flame retardancy of home decoration materials and accessories, because once a fire occurs, it will cause irreparable losses to the life and property of the entire family. A protective film is often pasted on the surface of home decoration materials, especially metal products, to protect the surface of metal products. The protective film is mainly made of polyolefin, a film mainly composed of polyethylene. [0003] At present, the requirements for flame retardancy of polyolefin protective films are being paid attention to by the industry. Li Dong, Zang Chongguang and others used decabromodiphenyl ether and antimony trioxide to study the flame retardant ...

AI Technical Summary

Problems solved by technology

Li Dong, Zang Chongguang and others used decabromodiphenyl ether and antimony trioxide to study the flame retardant properties of films in "Research on the Properties of Low-density Polyethylene Flame Retardant Films", and proposed decabromodiphenyl ether and antimony trioxide There is a flame retardant synergistic effect, but it does not solve the problem of a large amount of flame retardant addition; at the same time, because decabromodiphenyl ether cannot be melted in the blown film process, it is easy to produce abnormalities in the process of preparing ultra-thin films; while conventional phosphorus - The special V2 flame retardant for polypropylene of the bromine-nitrogen system is easy to volatilize and precipitate during the film process, causing the film to break and cannot be used in the process of laminating or blown film

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